Compressor-valve.



which it is supplied applied.

'ILSON A. ZIMMER, OF CLEVELAND,

onto7 assroivoa, er

^ ran sierras earner onirica..

MnsNE ASSIGNMENTS, To

THE CLEVELAND ICE MACHINE @a MANUFACTURING COMPANY, OF LORAIN: OHIO,

A CORPORATION OF OHIO.

COMPRESSOR-VALVE Specification of Letters Patent.

To all whom z' may concern Be it known that I, lTiLsoN A. Zmnrini, a

citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Compressor- Valvos, of which the following is a full, clear, and exact description, reference bein had to the accompanying drawings.

This invention relates to compressor valves; that is to say, valves that are employed with the cylinders into which a liuid is introduced and from which it is supplied under compression. Valves of this kind are emple-yed with cylinders into which ammonia is introduced and from under pressure to coils or pipes for the purpose of making ice. rl`he objects of the invention are to provide a valve mechanism for apparatus ot' this character which is nciseless and in which (particularly in the case of an inlet valve) should the stein break, the valve body will be prevented from dropping into the cylinder and interfering with the operation of the pumping mechanism. y

With the foregoing objects in view, the invention may be further and generally dcfined as consisting of the combinations of elements embodied in the claims hereto annexed and'illustrated in the drawings forming a part hereof, whcreim* Figure 1 represents a sectional detail of one side of a compressor cylinder having a valve constructed in accordance with my invention applied thereto; Fig. 2 represents a similar view of the opposite side of said cylinder, similarly equipped; Fig. 3 represents a sectional detail corresponding to the line 3-3 of Fig. et; and F ig. l represents a view, partly in section and partly in elevation, illustrating the manner in which the valves are secured to the cylinder.` Y Describing the parts by reference characters, 1 denotes the head of the cylinder, to one side of which an inlet vallveconstructed in accordance with myinvention is The cylinder head is provided with a lateral port 2 formed in the upper end of the same and communicating with an annular channel 3 formed jointly in a boreextending vertically through the cylinder head and in a bushing il llttedinto said bore. The vertical bore, to which reterence has been made7 is substantially cylindrical, but is contracted at to form an inclined seat 5 for the complementarily tapered lower end 6 of the bushing d. This bushing isprovided at its upper end with an .internal mesh with an external thread'f? formed on a sectional valve carrier fand guide. The threaded portion of the bush-ing 4 is located above a port 8, communicatingwithfthe lateral port 2 and with the chamber V9 formed within the lower portion of the bushing. Below this threaded portion and above the port 8, the

duced lower end of the .valvev support vor carrier 11 .to form a stop for said support or carrier. The lower portion of the bushing 4 is provided with a suitable number of additional ports 8a communicating with the annular space 3 and insuring a .uniform pressurewithin all parts of the chamber 9. For the purpose of retaining the valve support in position and to insure the register-v ing of the ports 2 and 8, a screw 12 is provided which extends through the upper portion of the bushing and vprojects int-o a suitable seat 13 formed in the outer wall of the valve-support 11.

For the pur-pose of securingthe bushing and valve support in place, a locking ring lel is provided. This ring has a external thread 15 adapted to mesh vertical cylinder bore,

l'arged above the thread, provide an ann/'ulm' recess for the of the flangia 14 projecting portion of i7 and the gasket 18 is inserted, and asimilar gasketreception the ring 1.4i. Between the ilange 19 will be inserted in the portionof the ref cess above said flange. A tight joint is made at the. recess by means ot'a cap 20, the lower'end 21 of whifch is adapted to be litt-ed in the annular recess formed between the upper end of the 'ring 14 and theadjaf` i said cap" being provided with a pair of flanges 2Q, i havingrapertures orthe reception of bolts f cent 'portion of thecylinder head` 33, theld-wer ends whereof are threaded into cin'respoiidingly threaded apertures in the cylindenhead', as shown at 9,4. The upper end the ring il is provided'with radial slots lwhich are. adaptedto receiaeyinwardlylprojecting lugs 2G carried the rammen Jaaa, i913. Application inea May 1e, 191e. serial No. 561,659.

its lower end,

thread;v adaptedl vto' bushing is provided' with a. ledge l-coperating with the rewith a similarl internal thread near the upper e d of thev whicln' bore vis e'nf' as shown at 16 to,

from;I the upper bottom ofthe recess, a siiitable .loo

lic

and the lugssubstantielly 180 degrees spertg By adjustnthe bolts 23, the'cep 2i forms.

'e a particular y effective and tightjoint with the cylinder head und ring 14.

Reference has been made to the valve supl Y port 11. This support is mede ncomple.

mentary sections, twol such sections being shown, vthe sections, when united, being gdapted to forni e unitary vmlvesupportinng .r rejects thevave stem 28, seid stern vluwbody. This bodyis provided with s ohnmber 27 in its up er ehhh-into which chamber ing on its lower end e lvalve 29 provided with a beveledsurface 30 coperating with the corresponding beveled seat-provided outside 'of and at the 'lower' end of the sleeve 4.

The stem is also rovidedwith a projection or shoulder 31, w ich projection is mounted 'forms-'a' double. annular seet tortbe upp within'the chamber 32 rovided in 'the coml 'glementarymembers o the vel-ve'body 11.

he upper end ofA the vulve stein is threcdved and is'provided with eslcevesl'deble thereon, said sleeve being provided with an external thread for the reception bf an outer sleeve'. The sleeves 33, 34`forn1 an aol- .justable' or follower on the valve stern 28' sind t Aepiston is prorided'st-its lower 'end' with `a Y'dou'nrward extension 3.5,Vwhich er ends of the helical'springs 316, 37, the lower ends of which are supportedby en annular seat formed on cdisk 38 mounted on the valve stem. The sleeve 33 and the piston 'of which it forros ofpartgmey be retained in place in any-convenient manner, its tay-means of nuts V39 and a cotter pin 40. By adjust ing thesenuts, the tension of the springs may be varied. Arestricted lport 4l corn- 'municateswiththe chamber in the csp 20 surrcmndiaig the relire support and with the chamber?? below ythe piston on thevalve stem 28; In' operating the compressors of refrigerating'apparatus, it has been found that the jarring or shock received by the vslvesf'causes thefmetal in' tlievelve stems' to crystallize," this crystallization 1 resulting in the breaking ofthe sterne.4 The provision of the restricted port' 41, together with the piston formed" by the sleeves 33A end 3ft, causes a dashspotisctiou tooccu'r'in the operation of the vtlve, 'whereby the jarring referred to is overcome, 'the valve" is noiseless in operittiom endth'emateriel of the valve stem is substantially-'free from crys tallization. However, should breakage occur, this breakage Aalways"takes place ot'tbe tppenportion ofthe valve stem, end vthe provision of the, shoulder 31 in the chamber y 32 will prevent the lower portion oi. the stem from dropp'A into the cylinder. By making the votre support in ports or sec `the bushing' being providediwi lerggediport 46 communicntingfwith the out- Leconte e tions the matter ol osscnobling the valve and its support is coniperetivelyensy, the bushl ing t serving to hold'the ps1-ts of the veli/e support in operative relation to each other. l

end to support the vseme in'plsce in the supply bore.

In. lig. 2 there isshown an outlet valve which is' shownl es employed with the seme 'cylinder es' the inletv valve. '-llhis valve is similar to the precedin valve 1n numerous perticulers, the moin dil erences betweenl the valves being such es arise troni the tsot that by pressure exerted troni within the cylinder, whle the former valve opens through pressure' acting in the opposite direction. ln both instances, however, the volvo body will loe-preferably mede, in parte, the perte beingheld together and the' valve being supn ported in the4 cylinder bore by o businn 'the valve shown in llig. 2 is adapted to open having its lower end tapered inwardly to .t

s tapered sent 4provided-lat the-inner end, of the, bore; also, in; both instances, the valve stem Ais provided'with o piston oper-sting in.

e chamber in the valve-supporting body,-

inside ont the valve-su porting body, which* springs 'cre operotive y` interposed between vthe piston on the valve stem and s. rela tively xed sbutment, means being provided for .adjusting the tension of the springs as occasion may require; also, the construction of the clamping or locking ring which-holds the bushing and valve-support in place' is identical in both ceses; so, also, is the construction of the oep ond the manner oi op j plying the someto the. cylinder end to the-` i ,locking V Referrmg now to the forni ola my inven l tion shown in Fig. 2, -1 denotes the cylinder heed, as before, the cylinder heed having s -bore which is. tapered et its inner end, as

shown et' 42; This bore is provided with an annuler lchannel i3-extending around the seme' and "forming, with the complement-ery channel inthe bushing 44, an annuler distributing channel into ywhichthe gas edmitted tothe interior of, the ,bushing 44 may be discharged:through suitable orts v3:5,

tg im enlet port :4T formed in the` cylinder heed. 'llieilowerend of the bushing 4A: is tapered inwsrdly, esvshown et t8, to rest upon the sont terrified et the inclinediower end et the vt'rrticul bore provided in the cylinder heed.,

he bushing is fprovided with an inter-nel tripered sert di? or tbe outlet valve 50, end

the upper end ofthe bushing is 'provided 130 with an internal thread 51 which is adapted to be threaded upon the exterior of the valve-supporting body 52, said body being provided with a shoulder 53 which is adapt- 'ed to bear against the upper endl of the I bashing. The body 52 is retained in position within the bushing by means ot a suitable set screw 54, the inner end of which engages a suitable notch formed in the 3 threaded exterior of said body. The bushing JA- is retained in place by a clamping ring similar to the ring 14 and having an annular flange 56 projecting into a suitable recess 57 provided in the cylinder head, j packing 58 being interposed between said tlanve and the bottom of saidrecess. The Ariu'g 5.3 will be provided with notches similar tothose in ring let for the reception of similar inwardly-project-ing lugs (not 29 shown) carried by the cap 59, the lower end 'ot said cap fitting in the upper end ot the recess 57 and suitable packing o() being interposed between the bottom of the cap and Athe tiange. It will be understood that the cap 59 is substantially identical with the cap 20 and will be secured in place. upon the kcylinder head inlike manner. The valve 50 'is carried by the valve s t'em 50a projecting upwardly into the chamber 61 provided at goftlieupper "end ot' the body 52. The valve stem isprovided with a shoulder 50" near the bottom of said chamber but located a distance thereabove, and a reduced shank 50C shown in Fig. 2 as threaded into sten' 50a. This shoulder forms an abutment for lifting the piston G2. ietween said piston and an abutment carried by the upper end ofthe body 52 there are interposed one 0r more helical springs G3. The valve stem 40 has` applied to its upper end an externallythreaded sleeve G4, said sleeve being ren tained in place upon the valves-tem by means of a nut rihe sleeve GG is applied to the sleeve 64, being threaded thereon and being provided with an external thread by means ,of which itwmay be` secured tothe upper threaded end ot the body The sleeves 64.- and (36 form an adjustable' abutment for vthe upper ends ot the spring or springs G3. Gl' 'denotesa restricted passageway communicating at one end with the space formed in the chamber 61 below the piston G2 and at its opposite end with the chamber surrounding said body.

ln operation, the movement of the .piston in the cylinder and toward the head 1 will unseat the valve 50 against the action ot the spring 63, and gas will be discharged through the outlet port 47. The provision somt the piston 62 'and restricted passageway 67-sccures a dash-pot action in the operation ot the valve, preventing the quick seating of lthe -valve by the spring or springs 63, thus rendering the valvelno-isel'ess and relieving 5,5 the same from shocks and jars. The movement of the piston away trom the head 1 opens the valve 29 against the action of the springs 36, 37 and allows gas to be drawn into the cylinder through the port 2. Ifneven movement of the valve is preventedby the dash-pot action secured by the provision of the piston formed by the sleeves 33, St and the restricted passageway 41. Similarly, when the piston in the cylinder reacties the end of its stroke or starts back toward the cylinder head, any quick. or violent Iseating of the valve is prevented by this dashpot action. rl`he construction described provides a valve mechanism which'A is very convenientof application to the cylinderghead, which may be very readily removed should occasion require; and which reduces to a minimum any chance of leakage of gas to the exterior of the cylinder.

Having thus described my invention, what Iclaimis:- f y 1. The combination, with a cylinder provided with a bore having a seat neark the inlet end thereof, of a bushing adapted to be applied to said bore and having an end cooperating with said seat, a valve support mounted in said bushing, a valve copcrat.-

ing with the lower end of the bushing and having a stem in said support, a clamping ring surrounding said support and threaded into the vbore beyond said bushing, and a cap carried bysaid cylinder andr inclosing the outer end of the valve support. v y

2. The combination, with a cylinder having a bore extending through one end thereot and a lateral port communicating with said bore, of a bushing within said bore andv adapted to make al tight joint with the interior surface thereof and having a port arranged to communicate with said lateral port and provided above the said port with an inwardly-projecting shoulder, and a threaded portion above ,saidv shoulder, a valve supporting body provided with 4an externally-threaded portion adapted to mesh with the thread above the 4shoulder' on the bushing, and a reciprocating valve having aA stem mounted in said body and cooperating Wit-h the inner end ofthe bushing. 3. The combination, with a cylinder having a bore, of a bushing vmounted in said bore, a valve-supporting body detachably sei cured to said bushing, a valve carried by said body, a clamping ring surrounding said body and detachably titted to the bore outside of the bushing, said ring having an outwardly-projecting flange extending into a recess provided in the 'cylinder head and urrounding t-he bore, a cap adapted to in- (tlose the outer end of the valve-supporting body and having its lower end adapted to `enter the recess in operative'relation to said flange, said ring and said cap having cooperating lugs and recesses for posltioning the saine,

' portion `werd seid to be fitted together andeach having a plusV 50 rality of fractional recesses, one of said reyin sald bore, of e hollowcylindrical-lrnishing end-bolts. securing' seid cap to the cylinder head. 4; The combination, with n kcylinder heving ebore lof n bushingA mounted seid bore, o va vez-supporting l'iodyl dctnchnbly 'secured to said-bushing,-a velveilcerried by 'scid body, e clam ing rin into t e bore outside of p snrrounding'seid and screw ushing, said ring having en outwardlyvi flange-extending into a recess bod the h projecting ,'provided in the cylinderheed and :surround` 'mg the bore, a cap adapted to inclose the outer end of the valvesupportmg body, end

members, adopted to be fitted 'tege ralty of fractioharl recesses,.. and' a valve adapted to cope atewith said @valve sont and having e steminsnid'sutport, said lstem having a piston in one' of ceases formed by assembling seid members and providing a dash ot, end having a pro` 'faction in the. other o the 'complete recesses so formed." 1 y 6..v The combination, with a cylinder hzwiv mg n bore and lsi port communicating with ,sind bore, of n hollow cylindrical bushing A.dat ted to he sented' in said bore and make a tight joint with the AWells thepeof, and having lateral discharge openings Iend n terminal valve seat, e valve support mounted in. said bushing and having e reduced portion projecting post said openings to- Ward seid seat, said valve support being made. of complementary nembers adapted cesses being formed in said reduced ortion, and u. valve adapted to copemte Wlth sind y Valve sent and having n stem in said su1pport, said stem having u projection in the recess formed in the reduced portion of the support,l and also having a pistony in the securing seid capvto the cylinder, 'sold 'seatend 5. The combination, with' a cylinder' impport mount,

extending into said ,cinch having a plu,-y

threaded collar Vscrew e complete rev menciono -other oiVseid recesses -and forming u dash pot therewith.

' 7. '.lhffcombination, with a cylinder hav-` ing e. bone and a. port communicating with seid bore, of 'a hollow cylindrical bushing ednptedto be seated in lsaid bore and make .e tight joint with the walls thereof, said bushinghavi'ng lateral discharge openings, e terminal velve seat, and an internal ledge on the' sideA of said 'openings opposite said valve seat, n two 'part valve support mountedl in said bushing and -,havng a shoulder abutting agonist t e said ledge, and having e deduced portion extending past said lopenings, and a valve adapted to coperete' with seid support,

seid bore, part of-,said bore being threaded,

vof' a hollow cylindricalV bushing adapted to be seated in said bore and to make a ti ht 'joint with the wells thereof and having at- -having a ystem'extending intol 8, The combination, with n cylinder havving a bore and a port communlcntingwith eral discharge openings and 'a valve seat et onev end, oA valve support 'in seid bushin incll rigidlyengaging the walls' thereof an extending therebeyond, avalve adaptedto coperatie 4with saidsea't and hnving'a stml support, an externally .I

- mtosad bore and ahuttin 'said bushing :undclosely',surround-L portgsoidfca" "being independentlfsecured l 9', The combination, .with'a cylinderluv-l ing n l,boreend eport communicating with to 'said cylin er.`

Aing sai valvefsnpporh and-pe, 'l.p 'engaging seidfbiire, port of seid 'bore beingthrended, of e hollow cylindrical bushingfinternnliy thi-ended at its outer end and seated vin said bore Wth'it'sf outer endv beyond said port I and jhaving' littoral dischar openings, and e valve sont et its inner en a` valve support screwed into the. outer end `of said bushing und retained thereby, n valve adapted to cooperate with seid 'sent and h'avingoJ stein extending into seid support, and an exterf nell threaded collar screwed into said bore against the outer end "of said bnshngnd closely surrounding said valve support;l c t In testimoni whereof,`I hereunto aix .my v

signataire mt e l'esenceof two witnesses. 

